Tank port and coupling



Jan. 22, 1952 G. E. WHITE TANK PORT AND COUPLING Original Filed Nov. 18, 1946 mw m W W2 w W v y Reissued Jan. 22, 1952" STATES uni; roar AND .conrLmG Geral whit Mid l Mica, assignor to White P duc s C p at n, M d levilie. Mish- Orlsinsi. No.- 2,413,669, dated June 21, 1949, Serial Noilil ifiL-Nuvemb 18, 1946- Application .19 reii suel laroh 2 950. fietiai No. 151568 g 1 2 ch m eerie- 3s; I I Matter enclosed in. hea t" time time in the original natent' 'buttomrnomt lfi reissue specification; matter printed}; italics. indicates the udditionsmde-by-reipue.

This invention relates to improvements inv a tank port and coupling.

The principal objects of this invention are:

First, to provide a port constructionior a. wa-. ter tank or other similar structure which. may be formed at relatively 10w cost.

Second, to provide a port; 1'01 attaching pipes or heating elements to a tank which will 118.3 a. single scalable, joint with; the fixture. attached to. the tank,

Third, t nrovid means 05. 8 and s curel coupling a fitting on a, which will form a single sealed junction between the tank and fitting.

Fourth. o provide a method or ine ensively. forming a port and coupling portion. on. a tank. adapted to receive a. heati g; element or p pe coupling fixture.

.Oth objects and ad anta es. per ai n .to. the economies and details of my invention will b appa n from the. o owi g description and claims.

The drawi o h h. t er s one sh et.-

illustrate a preferred form of my. port and couniing as applied to a ho Water heatins; tank- F e- 1 s an ele e al v ew of a. wate h a I ing tank with a pipecoupling fixtureand heatn e t f x reseeured the e o by y port. d. c nst Fig 2 is a fragmentary side; elevational view .1. e a l nt fix s o n n 1;-

. Fig. 3 is a fragmentarycross sectional view alq s the line 334 h} F ee is a composi e v e -iii cr s sect on i us hating the steps o owed. to m nsmh port,

Fi 1. st es a. wat r nk. I or sheet e a mounted, on three l 2, a d. o ded w th. an. inlet pipe 3, outlet pipe fixture l and, heating element fixture 5. i

As is ost particular-1Y l us rated. F x:- 4. the wall of the tank is pierced. as at liwhere it. is desired to form the port coupling tor at, taching a fixture. This mayheeitherin the side ine ns; oi.

for attaching the heating element ii s i iii? in;

the top for attaching the outlet pipe nature. 0. at. any other point wh reit. is desirable-to cone tpa. fixture communicating; ith. h in ide;

oi the ta Piercing orthe. wall s. r erably done while the wall is: in flat form and. beiqlteit is rolled or shaped into the. final struerture.

-Aiter the wall is pierced seat 6- the-metal around the aperture. isextruded outwardly of the tank to form a. drawneeh-.-1-ot. desired eter as illustrated in 3 4.1 Anmulat ring 8 countersunk on machined or-ground fiat as at Ii in Fig. 4;

The ring 8 defines a series of tappini holes equally spaced around the perimeter thereof which are-designed to receive the ends of'cap. screws I2 passed through mating hoies in the flange ll! of the fixture to be attached to the tank.

1 As is most particularly illustrated in Fig. 8 the-heating element flxture 5' comprises the flange plate l3- which defines-a pair of central apertures I4 openingintethedrawneckl. An. inner plate l5 defining a pair of outwardly flanged apertures I6 is positioned on the innersurfaoe of the flange plate with the flanged apertures l8 positionecl in the apertures-l 4 in the flange plate. A: U -shaped heating element i1 has-its endssupporta ed in the flanged apertures l6 and securely sealed thereto as by silver'solder' supports conductors 18 which extend outwarly through the. apertures l6. Aninsulating. member I! is se cured-over-the' apertures M and defines a pair.-

' countersunk in the outer-surface ofths insulator secures the insulator-and terminals to the-flangep'late l3.

The heating element fixture is easilyattached to the coupling by placingagasket 23 against: the machined edge I I 01 theand draw ing the inner surface of; theinner platein and; flange plate l3 tightly againstthm outside of the gasketwith the cap screws: M. A tightly-sealed joint is thus formed between. the end of: the drawneek and the fixture: with a homogeneous-.1 wall ofmetal extending irom seal: to. the... body of the tank.

The spinning operation:which.:.extends the end. of the drawneckoutwardly into. the countersunk portion of the ring nbeliewed. to. develop;- sufiicient heat to. anneallor draw any; headmistrains which might. developinthe cause the couplingincludineztherine and drawneck forms an attachinget'illai capable Of'wth!" standing all of: the; stress to ish lw clamp the fixture. asainstthe end, 0& the neckt- The. couplinsafix urei l fourths. outlet. may be formed. in. the.

outwardly into the ring by' spinning, it may be expanded by other means-for example, by swaging. However, I find" that the expanding by spinning has many. advantages, both from the practical standpoint and; superior structure.

I have described ahighly practical form of my couplin in two applications thereof so that others may reproduce the same for like or similar purposes without further description.

Havin thus described my invention, what I claim as new and desire to secure by Letters Patent,'is:

1. A portandcouping for a tank having a sheet metal wallcomprising a drawneck extruded outwardly from thewall of said tank, and a coupling ring defining a beveled aperture pressed around said drawneck and spaced from thewall of said tank with the beveled portion thereof facing outwardly, the outer end of said drawneckbeing spun outwardly to lap against said beveled portion, the end surface of said drawneck being machined flat in a plane parallel to said coupling ring and spaced therefrom. said ring defining a series of tapped apertures there- I around.

,2. A port and coupling for a tank having a metal wall comprising a drawneck extruded outwardly from the wall of said tank, and a coupling ring defining a countersunk aperture pressed around said drawneck and spaced from the wall of said tank with the countersunk portion thereof facing outwardly, the outer end of said drawneck being spun outwardly to lap against said countersunk portion, the end surface of said drawneck being machined fiat in a plane parallel to said coupling ring, said ring defining a series of, tapped apertures therearound.

'3. A port and couplingfor a tank comprising a. drawneck extruded outwardly from the wall of said tank, and a coupling ring defining a countersunkaperture pressed around said drawneck with the countersunk portion thereof facing outwardly-the outer end of said drawneck being spun outwardly to lap against said countersunk portion, the end surface of said drawneck being machined flat and spaced from said ring -.'4. A water tank comprising sheet metal walls, portions of said walls being pierced and extruded outwardly to form drawnecks. coupling rings having outwardly opening countersunk apertures formed therein pressed around said drawnecksand spaced from the walls of said tank, the ends vof said drawnecks being spun outwardly ';into said countersunk portions and machined fiat parallel 'to said coupling rings, said coupling rings defining a series of tapped apertures spaced therearound, a heating element having a fiat flange plate secured to one of said coupling collars by "capscrews extending therethrough, a gasket clamped between said flange plate and the finished end of said drawneck, a pipe oouplinmfixture having an annular flange secured to the other of said coupling dollars by .cap screws extending therethrough. and a gasket cIampedbetWeen said other drawneck and said annular flange. I

5. A water tankcomprising a sheet metal wall, a portion of said wall being pierced and extruded outwardly to form a drawneck, a coupling ring pressed around said drawneck and spaced from the wall of said tank, the end of said drawneck bein expanded outwardly to overlap a portion of said ring and machined fiat parallel. to said coupling ring, said coupling ring defining a series ofv tapped apertures spaced therearound, a heating element having a fiat flange plate secured to said coupling collar by cap screws extending therethrough, and a gasket clamped between said fi'ange plate and the finished end of said drawneck;-

6. A water tank comprising a sheet metal wall, a portion of said wall being pierced and extruded outwardly-to form a drawneck, a coupling ring having an outwardly opening countersunk aperture formed therein pressed around said drawneck and spaced from the wall of said tank, the end of said drawneck being expanded outwardly into said countersunk portion and machined fiat parallel to said coupling ring, said coupling ring defining a series of tapped apertures spaced therearound, and a heating element having a fiat flange plate secured to said coupling collar by cap screws extending therethrough.

7. A water tank comprising a sheet metal wall, a portion of said wall being pierced and extruded outwardly to forrma drawneck, a coupling ring having an outwardly opening countersunk aperture formed therein pressed around said drawneck and spaced from the wall of said tank, the end of said drawneck being expanded'outwardly into said countersunk portion and machined fiat, said' coupling ring defining a series of tapped apertures spaced therearound, a pipe coupling fixture having an annular flange secured to said coupling collar by cap screws extending therethrough, and a gasket clamped between said drawneck and said annular flange.

' 8. A water tank comprising a sheet metal wall, a portion'of said wall being pierced and extruded outwardly to form a drawneck, a coupling ring having an outwardly opening countersunk aperture'formed therein pressed around said drawneck, the end of said drawneck being expanded outwardly into said countersunk portion and machined flat in spaced relationship with said ring,

' said coupling ring defining a series of tapped apertures spaced therearound, and a pipe coupling fixture having an annular flange secured to said coupling collar by cap screws extending therethrough.

9. A port and coupling for a tank having a sheet metal wall comprising a drawneck formed by the wall of said tank and projecting outwardly therefrom, and a coupling ring embracing said drawneck and being held from removal therefrom by the outwardly flared end of said drawneck, the outer end of said drawneck presenting an annular sealing face entirely disposed in a plane and being spaced from said ring.

10. A port and coupling for a. tank having a. sheet metal wall comprising a drawneck formed from the metal of said wall and projecting outwardly therefrom, the outer end of said drawneck having a diameter greater than the diameter of said-drawneck at positions intermediate its ends and presenting an annular sealing face entirely disposed in;a plane, and a coupling ring.

assembled in embracing relationship with said drawneckand held from removal therefrom W the outer-{flared end of said draumeck, said sealing surface being spaced from said ring.

11. A port and coupling for a tank having a sheet metal wall comprising a draumeclc formed by the metal of said wall and prodecting outwardlu therefrom, the outer end of said drawneclc being flared outwardly and presenting an sealing surface at its outer end entirely disposed in a plane and having its outer end flared to a annular sealing surface entirely disposed in a plane. a coupling ring embracing said drawneck and heldjrom removal therefrom by the outwardly flared outer end thereof, said couplingj ring defining a-plurality o] tapped apertures, said sealing surface being spaced from said ring.

12. A water tank comprising a sheet metal wall, a drawneclc formed by said sheet metal wall and- 'proiecting outwardly therefrom, and'af coupling ring mounted around said drawnecle', said drawneck presenting a finished annular greater diameter than the diameter of said drawneclc at a point intermediate its ends, said coupling ring being held from removal from said I drawneclc by the flared outer end of said drawneclc, said sealing surface being spaced from the said ring. 7

GERALD E. WHITE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,792,928 Reigart Feb. 17, 1931 2,005,087 Kamack June 18. 1935 2,274,445 Greer Febi 24, 1942 

